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(DL) Delta Air Lines 3821 On-Time Performance Rating

Date Range:

15-Dec-2025 to 15-Feb-2026

(SDF) Louisville Muhammad Ali International Airport

Louisville, KY, US

(DTW) Detroit Metropolitan Wayne County Airport

Detroit, MI, US

On-Time Performance Chart

(using rounded numbers)
On-Time
42
79%
Late
1
2%
Very Late
0
0%
Excessive
9
17%
Cancelled
1
2%
Diverted
0
0%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
53
Total Delays ( > 1 min )
12
Codeshares
53
Average Delay (min.)
73.16666666666667
Standard Deviation
53.2
Min
0
Max
166

DL 3821 On-Time Performance Details

Overall Rating
2.0 of 5
Average
Percentage On-Time 79%
Average Delay Time 73.16666666666667 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 2 shows that this flight has on-time performance characteristics better than 38% of all other flights in the FlightStats database.
On-Time Performance Rating
3.9 of 5
Good
Percentage On-Time 79%
This flight has an on-time performance of 79%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 79% of other flights.
Delay Performance
0.0 of 5
Very Poor
Average Delay Time 73.16666666666667 min
This flight has an average delay of 73.16666666666667 minutes with a standard deviation of 53.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 1% of other flights.

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